GA1088

T R I Q U I N T S E M I C O N D U C T O R, I N C . FBIN 11 S1 10 REFCLK 9 S0 8 F1 7 F0 6 GND 5 GA1088 4 VDD 3 TEST 12 VDD 13 Phase Detector VCO Q10 Q9 Q0 14 2 11-Output Configurable Clock Buffer Features Wide frequency range: 18 MHz to 105 MHz Output configurations: three outputs at 1/2 fREF three outputs at fREF four outputs at fREF with adjustable phase or two outputs at fREF four outputs at 2x fREF four outputs at 2x fREF with adjustable phase SYSTEM TIMING PRODUCTS GND 15 Q1 Q2 16 17 MUX Divide Logic ÷4, ÷6, or ÷8 Output Buffers Group B Phase Select 1 GND 28 Q8 Q7 Group A Group C 27 VDD 18 26 VDD 19 20 21 22 23 24 25 GND Q3 Q4 VDD Q5 Q6 GND TriQuint’s GA1088 is a configurable clock buffer which generates 11 outputs, operating over a wide range of frequencies — from 18 MHz to 105 MHz. The outputs are available at either 1x and 2x or at 1x and 1/2 x the reference clock frequency, fREF . When one of the Group A outputs (Q0– Q2) is used as feedback to the PLL, all Group A outputs will be at fREF , and all Group B (Q3–Q6) and Group C (Q7–Q10) outputs will be at 2x fREF . When one of the Group B outputs is used as feedback to the PLL, all Group A outputs will be at 1/2 x fREF and all Group B and Group C outputs will be at fREF . A very stable internal Phase-Locked Loop (PLL) provides low-jitter operation. This completely self-contained PLL requires no external capacitors or resistors. The PLL’s voltage-controlled oscillator (V...